HP 2103R-CSDI manual Troubleshooting Network Connectivity Problems

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Troubleshooting Network Connectivity Problems

5-3

Troubleshooting

Network

Connectivity

Problems

If the Edge Router module does not appear to be routing traffic properly on the network, it may indicate that there is no connection to the network.

Try performing one or more of the following troubleshooting actions:

■For ONline and ONcore Edge Router modules only, use the 3Com management interface (for example, ONline management module) to verify that the Edge Router module backplane port is set to the appropriate backplane network (channel).

■Using the Cisco terminal interface, verify that the following parameters are set correctly:

■IP address

■Subnet mask

■Default gateway

■Use the ping utility to confirm that there is network connectivity.

■Use the cisco>show interfaces ethernet 0 command to verify that the interface is up and running. This command reports Ethernet statistics that aid you in troubleshooting the network.

If the interface is down, you may need to use the Cisco configuration editor to issue the no shutdown command. The no shutdown command restarts a disabled interface.

■Verify that your router configuration is valid. Refer to the Cisco Systems Troubleshooting Internetworking Systems guide for more information.

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Contents Edge Router Module Installation Guide For Ethernet 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Iii Page Contents Configuring the Edge Router Module Monitoring Edge Router Module Operation Index Limited Warranty Audience How to Use This GuideAbout this Guide IntroductionList conventions used throughout this guide ConventionsCommands Cisco Documents RelatedDocuments 3Com DocumentsInternational and Hughes LAN Systems, May Page Introduction LAN Product Overview Shows the architecture of each Edge Router module type Module Features Edge RouterIncluding IP/IPX Edge Router Module Features Ethernet LAN Edge Router Module Memory Configurations Feature Set Desktop Memory Type Page Installing the Edge Router Module Installation FlowchartConfigure the Edge Router module Router module PrecautionaryProcedures Quick InstallationCisco Systems Getting Started Guide Quick Installation Unpacking Edge Router Module Installation Guide for EthernetPlug Positions Verifying JumperSwitches Configuring DIPConfiguring ONcore Carrier DIP Parameters SwitchesIsolating the ONline Edge Router Module Enabling or Disabling Nvram Configuration Shows the ONcore carrier DIP switch locationTo select a network Set the switches according to Table If the NV SEL DIP switch isRouter Module InstallingIf you are installing ONline EdgeTo install the Edge Router module in an ONcore hub ONcore EdgeThis is called a hot swap Installing the Edge Router Module in an ONcore Hub Opened and Closed Module Ejectors Close the ejectors FigurePage Router Module Configuration ManagedOverview Attaching a ManagementTerminal Hub Selecting a Network Saving the ConfigurationThis section contains the following topics ConfiguringCarrier in a Managed ONcoreCarrier Default Settings Configuring the Carrier in a Managed ONcore Hub DMM DIP Nvram DIP Terminal to Auxiliary port Console Port Attaching a Terminal Cable to the Console Port Mini-DIN connector pinouts are provided in Appendix a Page Module Operation Monitoring EdgeOperation Edge Router Module LEDs Each LED is described in Table Following network management module commandsShowing Module StatusModule Command Syntax for the Show Module command is Using the ShowONline show module 6 verbose Edge Router module installed in slot 1 of an ONcore hub Port Command Ports Syntax for the Show Port command isONcore show port Page Troubleshooting Troubleshooting Troubleshooting Network Connectivity Problems Problems Malfunctions CorrectingOperating MalfunctionsSeconds, and then power it on Specifications Electrical General SpecificationsMechanical Specifications Environmental Specifications5006C-FT OpenHub Management Cable has a Cables when you install all equipmentCable Pinouts OpenHub Management Cable Part Number OHPMGT-CABDTR CTS TXD CTS Cable Pinouts DTE DCE Ltst CS+ SCTE+ Table A-17 X.21 DTE and DCE Cable Pinouts DB-15 15 Pin Days a week, 24 hours a day ServicesOnline Technical Through the following online systems408 Access by Digital ModemPress Return to view the 3ComForum main menu Support From Your NetworkSupplier Corporation U.S. and Canada, call 800 876-3266 for customer serviceTo find your authorized service provider 3ComAccessing the 3Com ISD MIB To exit the FTP session, invoke the quit commandContacting 3Com ISD Technical Publications Numerics IndexQuick Software 1-8Upgrading Firmware 1-8 memory Page Limited Warranty 408 764-5000 3/18/96